材料期刊网

蚴赘智ǜ? 160 mm热轧生产机组不能生产(1.5~1.6) mm×(940~1 400) mm薄窄规格SPA-H高强耐候钢，为保住战略客户，首钢采用冷轧工艺在顺义冷轧开发生产此钢种的薄窄规格产品。介绍了冷轧工艺开发SPA-H耐候钢的方法和过程,首先将热轧带钢通过酸轧机组生成冷硬带钢，冷硬带钢再通过连续退火机组生成最终冷轧产品，通过优化酸洗、轧制、碱洗、退火、平整等工艺，首钢顺义冷轧成功生产出冷轧SPA-H产品。该产品具有强度高、延伸好的特点，用该产品制造的集装箱完全可满足用户要求，可替代同品种的热轧卷板。

As the thin and narrow specifications (1.5-1.6) mm×(940-1 400) mm SPA-H high-strength weathering steel cannot be produced by the 2 160 mm hot rolling mill of Shougang Qiangang, in order to retain strategic customers, Shougang developed cold-rolled process to manufacture those productions in Beijing Shougang Cold Rolling Co.,Ltd. The production methods and processes of developing SPA-H high-strength weather-resisting steel were introduced. Firstly, the hot strips go through pickling line and tandem cold mill (PLTCM), and the un-annealed cold strips are gained; Secondly, the un-annealed cold strips turn into cold rolled strips by continuous annealing line (CAL), then the finished product is got. The cold annealed SPA-H high-strength weather-resisting steel was produced successfully by the process optimization of pickling, rolling, alkaline cleaning, annealing and tempering. The product has high strength and good extension, and the steel-made container can fully meet the requirement of custom, so the same assortment hot rolled coil strip can be replaced by it．